Ruby on Rails up to 4.2.11.0/5.0.7.1/5.1.6.1/5.2.2.0 Action View Header information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Ruby on Rails up to 4.2.11.0/5.0.7.1/5.1.6.1/5.2.2.0. Affected by this issue is some unknown functionality of the component Action View. The manipulation as part of Header leads to information disclosure. This vulnerability is documented as CVE-2019-5418. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ruby on Rails up to 4.2.11.0/5.0.7.1/5.1.6.1/5.2.2.0 (Programming Language Software). It has been rated as problematic. This issue affects some unknown processing of the component Action View. The manipulation as part of a Header leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.

The bug was discovered 03/13/2019. The weakness was released 03/27/2019 as EDB-ID 46585 as not defined exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2019-5418 since 01/04/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

After immediately, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as attacked. The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 210457 (RHEL 6 / 7 : rh-ror42-rubygem-actionpack (RHSA-2019:1149)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13442 (Ruby on Rails Multiple Security Vulnerabilities). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 07/07/2025 with a due date of 07/28/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading to version 4.2.11.1, 5.0.7.2, 5.1.6.2 or 5.2.2.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (46585) and Tenable (210457). Entries connected to this vulnerability are available at VDB-132552 and VDB-132553. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 210457
Nessus Name: RHEL 6 / 7 : rh-ror42-rubygem-actionpack (RHSA-2019:1149)

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Ruby on Rails 4.2.11.1/5.0.7.2/5.1.6.2/5.2.2.1

Timelineinfo

01/04/2019 🔍
03/13/2019 +68 days 🔍
03/27/2019 +14 days 🔍
03/27/2019 +0 days 🔍
03/27/2019 +0 days 🔍
03/28/2019 +1 days 🔍
10/30/2025 +2408 days 🔍

Sourcesinfo

Advisory: EDB-ID 46585
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-5418 (🔍)
GCVE (CVE): GCVE-0-2019-5418
GCVE (VulDB): GCVE-100-132551
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/28/2019 14:21
Updated: 10/30/2025 22:47
Changes: 03/28/2019 14:21 (70), 05/22/2020 14:32 (1), 11/07/2024 09:20 (21), 07/07/2025 23:15 (16), 07/07/2025 23:24 (1), 10/30/2025 22:47 (1)
Complete: 🔍
Cache ID: 216::103

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